Prime p₀= 1556689516723698529 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 28 30 24 8 40 2 22 6 62 6 22 2 40 8 24 30 28 (?)
a_n: 0 28 58 82 90 130 132 154 160 222 228 250 252 292 300 324 354 382
All 18 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 382
Found by: crashtech
db: batch=78, k=18, 28 30 24 8 40 2 22 6 62

STPT(10)	1556687939374907147	0 2 54 56 72 74 90 92 144 146	-1577348791382
SPT(16)	1556688120029647013	0 66 80 84 96 128 140 194 210 264 276 308 320 324 338 404	-1396694051516
SPT(16)	1556688761820950509	0 22 42 70 82 100 114 120 202 208 222 240 252 280 300 322	-754902748020
SPT(16)	1556689113855104497	0 52 72 76 100 136 160 162 184 186 210 246 270 274 294 346	-402868594032
SPT(13)	1556689498172930021	0 42 102 120 150 180 186 192 222 252 270 330 372	-18550768508
STPT(10)	1556689508783598587	0 2 30 32 72 74 114 116 144 146	-7940099942
STPT(10)	1556689536167060717	0 2 90 92 102 104 114 116 204 206	19443362188
STPT(10)	1556689572686396969	0 2 42 44 60 62 78 80 120 122	55962698440
SPT(16)	1556689775415450821	0 26 48 66 80 90 96 182 186 272 278 288 302 320 342 368	258691752292
STPT(10)	1556689834772725517	0 2 12 14 72 74 132 134 144 146	318049026988
SPT(16)	1556689985316532513	0 16 18 24 28 58 66 84 100 118 126 156 160 166 168 184	468592833984